I think that the answer would be D
        
             
        
        
        
It is true that Costs, also called differential costs, are the additional costs from selecting a certain course of action.
<h3>What is 
differential costs?</h3>
 Differential cost serves as the  difference between the cost of alternative decisions.
Therefore, It is true that Costs, also called differential costs, are the additional costs from selecting a certain course of action and the  cost do take place when a business have several similar options,
Learn more about differential costs, at
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Answer:
What
How
Who
Explanation:
Because ALL economic resources are scarce, every society must answer three questions:
1. What goods and services should be produced?
2. How should these goods and services be produced?
3. Who consumes these goods and services?
 
        
             
        
        
        
Answer:
A)) interest expense from loans to purchase corporate bonds and interest expense from loans to purchase stocks.
Explanation:
An investment interest expense can be regarded as any amount of interest which is been paid on proceeds of loan that is been used in purchasing investments or securities. investment interest expense can be regarded as been deductible under some particular circumstances.
 It should be noted that investment interest expense include;
✓interest expense from loans to purchase corporate bonds 
✓ interest expense from loans to purchase stocks.